3 years ago

Is this true or false?

Chemistry

2 answers:

harina [27]3 years ago

7 0

Answer:

true

Explanation:

ExtremeBDS [4]3 years ago

6 0

That would be true

(hope this helps ^^)

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a clown in the park gave a child a balloon filled with 7.00 L of helium at 301 K. What will the volume of the balloon be when th

dybincka [34]

Answer:

6.9L

Explanation:

6 0

3 years ago

If a buffer solution is 0.250 M 0.250 M in a weak base ( K b = 8.0 × 10 − 5 ) Kb=8.0×10−5) and 0.540 M 0.540 M in its conjugate

Kaylis [27]

Answer:

9.57

Explanation:

Given that:

$pK_{b}=-\log\ K_{b}=-\log(8.0\times 10^{-5})=4.1$

Considering the Henderson- Hasselbalch equation for the calculation of the pOH of the basic buffer solution as:

$pOH=pK_b+log\frac{[conjugate\ acid]}{[base]}$

So,

$pOH=4.1+\log\frac{0.540}{0.250}=4.43$

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3 years ago

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maw [93]

Answer:

False

Explanation:

using the measurements of the amounts of chemicals, it can be calculated to some degree of accuracy depending mainly on the accuracy of the measurements and enviroments of the reaction

5 0

4 years ago

What is the mass of 0.125 mol of CO2

vaieri [72.5K]

Answer:

5.50g (corrected to 3 significant figures)

Explanation:

mass = no. of moles x molar mass

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Therefore, mass = 0.125 x 44.0087

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8 0

3 years ago

Are you change in temperature with distance is called a temperature ____________?

ladessa [460]

Answer:

gradient

Explanation:

Unlike the change in pressure and density, which decrease with altitude, changes in air temperature are not regular. A change in temperature with distance is called a temperature <em>gradient.</em>

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4 years ago